J. Baird Callicott is chair of the Department of Philosophy and Religion Studies and Regents Professor of Philosophy and Religion Studies in the Institute of Applied Sciences at the University of North Texas. From 1997 to 2000 he was president of the International Society for Environmental Ethics. He has authored more than a hundred book chapters, journal articles, encyclopedia entries, and book reviews. He recently published the two-volume Encyclopedia of Environmental Ethics and Philosophy (2008).